Who created muckraking?

Muckraking did not have a single creator but emerged as a journalistic movement in the early 20th century, particularly associated with writers and journalists such as Upton Sinclair, Ida Tarbell, and Lincoln Steffens. The term "muckraker" was popularized by President Theodore Roosevelt in 1906, referring to journalists who exposed corruption, social injustices, and corporate wrongdoing. This movement played a significant role in reforming American society by raising public awareness and prompting legislative changes.